Simulation of Ground Penetrating Radar for Anti-personnel Landmine Detection

Gao, Xianyang; Podd, Frank; Verre, Wouter van; Daniels, David J.; Tan, Yee Mei; Peyton, Anthony

doi:10.1109/icgpr.2018.8441564

Cited by 4 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The above‐mentioned dimensions, with regard to the spatial discretization of 2 mm, represent the largest usable model volume as it exhausted the memory capacity of the GPU (48 GB). In some scenarios, the profiles were repeated with different antenna elevations above the ground surface, as for landmine and IED detection non‐contact measurements are often required and the antenna height has an impact on the sensor performance (Gao et al., 2018). If not stated otherwise, simulations were carried out with the antenna model as well as a dipole source.…”

Section: Scenarios and Resultsmentioning

confidence: 99%

Realistic simulation of GPR for landmine and IED detection including antenna models, soil dispersion and heterogeneity

Stadler,

Schennen,

Hiller

et al. 2023

Near Surface Geophysics

View full text Add to dashboard Cite

Ground‐penetrating radar (GPR) is an effective tool for detecting landmines and improvised explosive devices (IEDs), and its performance is strongly influenced by subsurface properties as well as the characteristics of the target. To complement or replace labour‐intensive experiments on test sites, cost‐efficient electromagnetic wave propagation simulations using the Finite‐Difference Time‐Domain (FDTD) method are being increasingly used. However, to obtain realistic synthetic data, accurate modelling of signal alteration caused by dispersion, scattering of soil material, target contrast, shape, and inner setup, as well as the coupling effects of the antenna to the ground is required. In this study, we present a detailed 3D model of a shielded GPR antenna applied to various scenarios containing metallic and non‐metallic targets buried in different soils. The frequency‐dependent intrinsic material properties of soil samples were measured with the coaxial transmission‐line technique, while a discrete random media was used to implement the heterogeneity of a gravel based on its grain‐size distribution. Our simulations show very good agreement with experimental validation data collected under controlled conditions. We accurately reproduce the amplitude and frequency content, phase of target signals, subsurface's background noise, antenna crosstalk and its interference with target signals, and the effect of antenna elevation. The approach allows for systematic investigation of the effects of soil, target, and sensor properties on detection performance, providing insight into novel and complex GPR scenarios and the potential for a wide range of simulation possibilities for demining with GPR. These investigations have the potential to improve the safety and effectiveness of landmine and IED detection in the future, such as building a database for training deminers or developing automatic signal pattern recognition algorithms.This article is protected by copyright. All rights reserved

show abstract

Section: Scenarios and Resultsmentioning

confidence: 99%

Realistic simulation of GPR for landmine and IED detection including antenna models, soil dispersion and heterogeneity

Stadler,

Schennen,

Hiller

et al. 2023

Near Surface Geophysics

View full text Add to dashboard Cite

show abstract

“…The transformer baluns are smaller, have a lower reflection coefficient, and have better reproducibility between devices, but their output impedance is lower than that of the tapered baluns, which were designed to have a 200 Ω output impedance. In previous work it has been found [22], [23] that feed impedance at the antenna terminals changes the time-domain signal of the radiated pulse. The higher output impedance from the tapered baluns is preferred in this experiment to reduce the ringing in the time-domain.…”

Section: Experimental Methodologymentioning

confidence: 99%

Reducing the Induction Footprint of Ultra-Wideband Antennas for Ground-Penetrating Radar in Dual-Modality Detectors

Verre

Podd

Gao

et al. 2021

IEEE Trans. Antennas Propagat.

Self Cite

View full text Add to dashboard Cite

The combination of metal detection (MD) and ground-penetrating radar (GPR) has been successfully deployed to combat the threat from buried anti-personnel landmines. A number of issues arise from the close integration of these two sensing modalities. One issue is the proximity of the metallic GPR antennas to the MD coils, which affects the performance of the MD due to the eddy currents created within the GPR antenna structure. In this paper the effect of traditional solid bowtie antenna design on a MD is investigated, and avenues for the reduction of the eddy currents are explored. Three modifications to the solid bowtie design are proposed and evaluated. This paper presents measurements of the MD response to all four antenna designs using a magnetic induction spectroscopy sensor. It was found that the MD response to the bowtie antenna can be reduced by 91% to 98% across the MD operating frequency band, without significantly altering the RF performance, such as reflection and transmission coefficient and radiation pattern.

show abstract

“…Previous work [51] simulated the soil as a homogenous loss-less soil with a relative permittivity of 20. This paper extended that work to cover both loss-less and lossy soil with two relative permittivities (8 and 20).…”

Section: Methodsmentioning

confidence: 99%

Investigating the Performance of Bi-Static GPR Antennas for Near-Surface Object Detection

Gao

Podd

Verre

et al. 2019

Sensors

Self Cite

View full text Add to dashboard Cite

Antennas are an important component in ground penetrating radar (GPR) systems. Although there has been much research reported on the design of individual antennas, there is less research reported on the design of the geometry of bi-static antennas. This paper considers the effects of key parameters in the setup of a GPR head consisting of a bi-static bow-tie pair to show the effect of these parameters on the GPR performance. The parameters investigated are the antenna separation, antenna height above the soil, and antenna input impedance. The investigation of the parameters was performed by simulation and measurements. It was found when the bi-static antennas were separated by 7 cm to 9 cm and were operated close to the soil (2 cm to 4 cm), the reflected signal from a near-surface object is relatively unaffected by height variation and object depth. An antenna input impedance of 250 Ω was chosen to feed the antennas to reduce the late-time ringing. Using these results, a new GPR system was designed and then evaluated at a test site near Benkovac, Croatia.

show abstract

Simulation of Ground Penetrating Radar for Anti-personnel Landmine Detection

Cited by 4 publications

References 10 publications

Realistic simulation of GPR for landmine and IED detection including antenna models, soil dispersion and heterogeneity

Realistic simulation of GPR for landmine and IED detection including antenna models, soil dispersion and heterogeneity

Reducing the Induction Footprint of Ultra-Wideband Antennas for Ground-Penetrating Radar in Dual-Modality Detectors

Investigating the Performance of Bi-Static GPR Antennas for Near-Surface Object Detection

Contact Info

Product

Resources

About